bigmyself

I hear clicking noise from dynamic seats (Driver and Passenger side both). Noise runs every 5-10 seconds from both seats. I researched this forum and found some limited informations that some stated this was normal and the others air leakage. But my seats work perfectly as they should and I do not hear any hissing or feel any decreasing air pressure from bolsters. So I opened the back panel of the seat and checked which part made noise. It was the valve block in the red box in the picture below. I unplugged the black power cable cable at the right top of the valve block, then noise stopped and plugged back and noise again.
It doesn't look like anything wrong.
Is there any one fixed this issue?

hvacdude

You have a leak somewhere . Check out my posts on the lumbar system. https://mbworld.org/forums/s-class-w...ml#post6615054

bigmyself

Thanks for good info!
But my seats, both front seats, work perfectly as they should in every way.
Also, DAS system does not detect any issue when hooked-up.